JP3311270B2 - Fireproof structure of base-isolated building - Google Patents
Fireproof structure of base-isolated buildingInfo
- Publication number
- JP3311270B2 JP3311270B2 JP09845397A JP9845397A JP3311270B2 JP 3311270 B2 JP3311270 B2 JP 3311270B2 JP 09845397 A JP09845397 A JP 09845397A JP 9845397 A JP9845397 A JP 9845397A JP 3311270 B2 JP3311270 B2 JP 3311270B2
- Authority
- JP
- Japan
- Prior art keywords
- fire
- seismic isolation
- isolation device
- building
- resistant
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Description
【０００１】[0001]
【発明の属する技術分野】本発明は、免震建造物の防火
構造に係わるもので、より具体的には免震装置を施工し
た建造物に防火区画を構成する防火壁の構造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fire protection structure for a base-isolated building, and more particularly to a structure of a fire-blocking wall constituting a fire-blocking section in a building on which a base-isolation device is installed.
【０００２】[0002]
【従来の技術】建造物に使用される免震装置として、鋼
板とゴムを交互に積み重ねて構成した積層体からなるも
のが広く使用され、これらは個々に独立した耐火被覆構
造を備え、各個に耐火性能が付与されている。一般に、
免震装置は基礎と建物の間に設けられ、衝撃が直接建物
に伝わらないようになっており、免震装置が建物の荷重
を支承している。2. Description of the Related Art As a seismic isolation device used for a building, a device composed of a laminated body formed by alternately stacking a steel plate and a rubber is widely used. Fire resistance is provided. In general,
The seismic isolation device is installed between the foundation and the building so that impacts are not transmitted directly to the building, and the seismic isolation device supports the load of the building.
【０００３】ところで、免震装置は構造物下で基礎との
間に設置されるだけでなく、今後は構造物の免震構造化
のため適用範囲が拡張され、また、建築の高層化に対応
するには任意の場所に設置することが不可欠となる。免
震装置を建築物の中間層に設置した場合、特に免震装置
設置階より下の階層から出火したときは、火災の熱によ
る免震装置の弾塑性変形性能および弾性復元力、耐負荷
容量等、免震機能の劣化に伴い、免震装置設置階より上
層階を構成する構造体の垂直度も影響を受けることにな
る。By the way, the seismic isolation device is not only installed under the structure and between the foundation, but also in the future, the scope of application is expanded for the seismic isolation structure of the structure, and in response to the high rise of the building In order to do so, it is essential to install it in any location. When the seismic isolation device is installed in the middle layer of a building, especially when a fire starts from the floor below the floor where the seismic isolation device is installed, the elasto-plastic deformation performance, elastic restoring force, and load capacity of the seismic isolation device due to the heat of the fire As the seismic isolation function deteriorates, the verticality of the structures that make up the floor above the seismic isolation device installation floor will also be affected.
【０００４】一方、建築基準法による防火区画は、火災
時には耐火材で構成された防火壁を含む防火手段によ
り、防火区画内を外界からの閉鎖空間に形成して火災や
高熱を遮断するようになっている。従って、免震装置が
建築物の中間層に設置されると、構造体の一部である建
築物外壁、吹き抜け空間の境界壁ならびに人の移動に関
する階段室、エレベータシャフト、物品移送に関するダ
ストシュート、リネンシュートおよび空調・排気ダク
ト、給・排気管または配電通信ケーブル等の設備用シャ
フト等の建物を連続して貫通する堅穴区画を形成する防
火壁が、直接免震装置に関係してくる。その他、面積区
画あるいは地下街、駐車場、劇場等を含む異種用途区画
と同一階層に区画を構成する防火壁と免震装置とが共存
することも在りうる。On the other hand, in the case of a fire compartment according to the Building Standards Law, in the event of a fire, the inside of the fire compartment is formed as a closed space from the outside by a fire prevention means including a fire wall made of a fire-resistant material so as to block fire and high heat. Has become. Therefore, when the seismic isolation device is installed in the middle layer of the building, the outer wall of the building which is a part of the structure, the boundary wall of the stairwell, and the staircase for the movement of people, the elevator shaft, the dust chute for the transfer of goods, Fire barriers that form hard-hole sections that continuously penetrate buildings, such as linen chute and equipment shafts such as air-conditioning / exhaust ducts, supply / exhaust pipes or power distribution communication cables, are directly related to seismic isolation devices. In addition, a fire barrier and a seismic isolation device may be co-existing on the same floor as an area section or a section for different purposes including an underground mall, a parking lot, a theater, and the like.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら免震装置
は、地震発生時にそれ自体が設置された下層階とそれ自
体が支持する上層階との相対的に位相の異なる変位を許
容したり、それ自体が設置された基礎に対してそれ自体
が支持する躯体の変位を許容して柔軟に対応できるよう
にするものである。一方、防火区画を形成する防火壁
は、耐火材からなる剛性体で上層階と下層階あるいは基
礎と躯体とを密に連結して免震装置を含む防火区画内を
外界から遮断し、地震発生後も防火区画の内部が直接火
災や高熱に曝されて延焼に及ぶのを防止する機能を維持
しなければならない。However, the seismic isolation device allows displacement of a phase difference between a lower floor where the base floor itself is installed and an upper floor supported by the base floor itself when an earthquake occurs, or This allows the skeleton supported by itself to be displaced with respect to the foundation on which it is installed so that it can flexibly respond. On the other hand, the fire barrier that forms the fire compartment is a rigid body made of fire-resistant material and tightly connects the upper and lower floors or the foundation and the building to block the inside of the fire compartment, including the seismic isolation device, from the outside world. Even afterwards, the function must be maintained to prevent the inside of the fire protection compartment from being directly exposed to fire or high heat and spreading the fire.
【０００６】本発明の目的は、上記のような免震装置と
共存する防火壁構造の問題点を解決し、免震装置の挙動
に干渉せず、地震発生後も耐火性能が損傷されずに防火
区画が維持可能な防火壁を提供することである。SUMMARY OF THE INVENTION An object of the present invention is to solve the problems of the fire wall structure coexisting with the seismic isolation device as described above, without interfering with the behavior of the seismic isolation device, and without impairing the fire resistance even after the occurrence of an earthquake. It is to provide a fire wall that the fire compartment can maintain.
【０００７】[0007]
【課題を解決するための手段】上記の目的を達成するた
め、本発明に係わる免震建造物の防火壁の構造は、免震
装置を建造物の中間階層に設置した免震建造物におい
て、前記免震装置を支持する下層階躯体と前記免震装置
が支持する上層階躯体とが異なる位相で変位可能なよう
に、前記免震装置が支持する上層階躯体と下層階躯体の
防火壁との間に摺接部分を含むように構成して、前記上
層階躯体の摺接部分に摺動部材として耐熱性構成体を着
設し、前記耐熱性構成体が、鋼板製取付部材と無機繊維
フェルトまたは無機繊維ブラケットからなる芯材と耐火
性シートからなる表皮とで構成されていることを特徴と
している。In order to achieve the above-mentioned object, the structure of the fire protection wall of the seismic isolation building according to the present invention is characterized in that the seismic isolation device is installed on a middle floor of the building. The lower floor frame supporting the seismic isolation device and the upper floor frame supported by the seismic isolation device can be displaced in different phases, so that the upper floor frame supported by the seismic isolation device and the fire wall of the lower floor frame. A heat-resistant component is provided as a sliding member on the sliding portion of the upper story body , wherein the heat-resistant component comprises a steel plate mounting member and an inorganic fiber.
Core made of felt or inorganic fiber bracket and fire resistant
And a skin made of a conductive sheet .
【０００８】また、本発明に係わる免震建造物の防火壁
の構造は、免震装置を建造物の基礎に設置した免震建造
物において、前記免震装置が支持する躯体が基礎に対し
て変位可能なように、前記躯体とこれを支持する防火壁
との間に摺接部分に構成して、前記躯体の摺接部分に摺
動部材として耐熱性構成体を着設したことを特徴として
いる。Further, according to the present invention, there is provided a structure of a fireproof wall of a base-isolated building, wherein the structure supported by the base-isolated apparatus is provided on a base of the base-isolated building. In such a manner that it is displaceable, it is configured in a sliding contact portion between the skeleton and a fire wall supporting the same, and a heat-resistant component is mounted as a sliding member on the sliding contact portion of the skeleton. I have.
【０００９】前記耐熱性構成体は、鋼板製取付部材と、
無機繊維フェルトまたは無機繊維ブラケットからなる芯
材と耐火性シートからなる表皮とで構成されるが、好ま
しくは、鋼板製取付部材と、ロックウールフェルトから
なる芯材と、セラミックファイバーブラケットからなる
外殻と、ガラスクロスまたは耐火性不織布のいずれかか
らなる表皮とで構成される。[0009] The heat-resistant structure comprises a steel plate mounting member,
It is composed of a core material made of inorganic fiber felt or an inorganic fiber bracket and a skin made of a refractory sheet, but is preferably a steel plate mounting member, a core material made of rock wool felt, and an outer shell made of a ceramic fiber bracket. And a skin made of either glass cloth or a fire-resistant nonwoven fabric.
【００１０】[0010]
【発明の実施の形態】以下に、本発明に係わる免震建造
物の防火壁の構造の好ましい実施の形態を図面に基づい
て説明する。図１は、建築物の防火区画を説明する模式
的側面図で、下層階（図中２階）の層間区画１０と上層
階（図中３階）の層間区画１１との間に設けられた中間
層１２に免震装置１３が設置され、上下の階層間に介装
された免震装置１３は上層階の全荷重を支承している。
免震装置１３を設置した中間層１２は、外気１４を遮断
する外壁１５、堅穴区画１６の防火壁１７および面積区
画１８の防火壁１９によって囲まれ防火区画２０を構成
している。ちなみに、図中堅穴区画１６は例えばエレベ
ータシャフト、２１は劇場等の異種用途区画の例示であ
る。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the structure of a fire barrier of a base-isolated building according to the present invention will be described below with reference to the drawings. FIG. 1 is a schematic side view illustrating a fire prevention section of a building, and is provided between an interlayer section 10 on a lower floor (second floor in the figure) and an interlayer section 11 on an upper floor (third floor in the figure). A seismic isolation device 13 is installed on the middle floor 12, and the seismic isolation device 13 interposed between the upper and lower floors supports the entire load on the upper floor.
The middle layer 12 on which the seismic isolation device 13 is installed is surrounded by an outer wall 15 that blocks the outside air 14, a fire wall 17 of a hard hole section 16, and a fire wall 19 of an area section 18 to form a fire section 20. Incidentally, the hard hole section 16 in the figure is an example of an elevator shaft, and the example 21 is an example of a heterogeneous use section such as a theater.
【００１１】図２は、耐熱性構成体Ａの断面図で、２２
は鋼板製取付部材で、２３はロックウールフェルトの芯
材、２４はセラミックファイバーブラケットの外殻、そ
して２５はガラスクロスまたは耐火性不織布である。前
記耐熱性構成体Ａは製造工場において、免震装置を支持
する躯体と、その下層階躯体の防火壁の所定寸法に適合
するように作成される。FIG. 2 is a sectional view of the heat-resistant construction A,
Is a steel plate mounting member, 23 is a core material of rock wool felt, 24 is an outer shell of a ceramic fiber bracket, and 25 is a glass cloth or a fire-resistant nonwoven fabric. The heat-resistant structure A is produced in a manufacturing factory so as to conform to predetermined dimensions of a frame supporting the seismic isolation device and a fire barrier of the lower floor frame.
【００１２】図３は、例えば、免震装置１３を設置した
中間層１２を、その下層階躯体となる防火壁１５ａ，１
９ａに固定せず、防火壁の上面を摺接面２６とした実施
例の断面図である。このため、耐熱性構成体Ａが、現場
で中間層１２の下面２７に締結具２８で着設される。な
お、この例では図３の一点鎖線の位置にはアンカーボル
トが埋設されている。工場で製造された耐熱性構成体Ａ
の厚さは、現場における防火壁の摺接面２６までの間隔
より若干大きく形成されている。FIG. 3 shows, for example, a case in which an intermediate layer 12 on which a seismic isolation device 13 is installed is replaced with a fire wall 15a, 1 serving as a lower story frame.
It is sectional drawing of the Example which is not fixed to 9a and used the upper surface of the fire protection wall as the sliding contact surface 26. For this purpose, the heat-resistant component A is installed on the lower surface 27 of the intermediate layer 12 with fasteners 28 in the field. In this example, an anchor bolt is buried at a position indicated by a chain line in FIG. Heat-resistant construction A manufactured in the factory
Is formed to be slightly larger than the distance to the sliding contact surface 26 of the fire wall at the site.
【００１３】上記構成によって、耐熱性構成体Ａは、中
間層１２に着設されているが、取付時の圧縮以外の荷重
負担はない。従って、耐熱性構成体Ａは中間層１２と一
体に、防火壁の摺接面２６を圧接しながら摺動可能であ
り（図中矢印）、中間層１２の上下層間区画は相対的に
位相の異なる変位が許容される。With the above structure, the heat-resistant structure A is attached to the intermediate layer 12, but does not bear any load other than compression during mounting. Therefore, the heat-resistant structure A can slide integrally with the intermediate layer 12 while pressing the sliding contact surface 26 of the fire barrier (arrows in the figure), and the upper and lower interlayer sections of the intermediate layer 12 are relatively out of phase. Different displacements are allowed.
【００１４】[0014]
【発明の効果】以上説明したように、本発明に係わる免
震建造物の防火壁の構造によれば、免震装置と防火区画
が互いに干渉することなく機能できるので、優れた免震
作用を備えた防火建築物が達成できる。As described above, according to the structure of the fire barrier of the seismic isolation building according to the present invention, the seismic isolation device and the fire prevention compartment can function without interfering with each other. A fire-protected building equipped with can be achieved.
【図１】本発明に係わる免震建造物の防火壁の構造を適
用した建築物の一例を説明する模式的断面図である。FIG. 1 is a schematic cross-sectional view illustrating an example of a building to which a structure of a fire barrier of a base-isolated building according to the present invention is applied.
【図２】本発明に係わる免震建造物の防火壁の構造にお
ける耐熱性構成体の断面図である。FIG. 2 is a cross-sectional view of a heat-resistant structure in a structure of a fire barrier of a base-isolated building according to the present invention.
【図３】本発明に係わる免震建造物の防火壁の構造の一
例を示す断面図である。FIG. 3 is a cross-sectional view showing an example of a structure of a fire barrier of a base-isolated building according to the present invention.
【符号の説明】 １０，１１ 層間区画 １２ 中間層（天井面） １３ 免震装置 １４ 外気 １５ 外壁 １５ａ，１９ａ 防火壁 １６ 堅穴区画 Ａ 耐熱性構成体 １７，１９ 防火壁 ２２ 鋼板製取付部材 ２３ ロックウールフェルト ２４ セラミックファイバーブラケット ２５ ガラスクロス ２６ 摺接面 ２７ 下面 ２８ 締付具[Description of Signs] 10, 11 Interlayer section 12 Intermediate layer (ceiling surface) 13 Seismic isolation device 14 Outside air 15 Outer wall 15a, 19a Fire wall 16 Hard hole section A Heat resistant structure 17, 19 Fire wall 22 Steel plate mounting member 23 Rock wool felt 24 Ceramic fiber bracket 25 Glass cloth 26 Sliding contact surface 27 Lower surface 28 Fastener
Claims (2)
免震建造物において、前記免震装置を設置した下層階躯
体と前記免震装置が支持する上層階躯体とが異なる位相
で変位可能なように、前記免震装置が支持する上層階躯
体と、下層階躯体の防火壁との間に摺接部分を含み、前
記上層階躯体の摺接部分に摺動部材として耐熱性構成体
を着設し、前記耐熱性構成体が、鋼板製取付部材と無機
繊維フェルトまたは無機繊維ブラケットからなる芯材と
耐火性シートからなる表皮とで構成されていることを特
徴とする免震建造物の防火壁の構造。In a seismic isolation building in which a seismic isolation device is installed on a middle floor of a building, a lower story frame on which the seismic isolation device is installed and an upper story frame supported by the seismic isolation device are displaced in different phases. Preferably, the heat-resistant structure includes a sliding contact portion between an upper floor frame supported by the seismic isolation device and a fire wall of the lower floor frame, and a sliding member is provided on the sliding contact portion of the upper floor frame. The heat-resistant structure, the steel plate mounting member and inorganic
With core material consisting of fiber felt or inorganic fiber bracket
A structure of a fire barrier of a base-isolated building , comprising a skin made of a fire-resistant sheet .
と、ロックウールフェルトからなる芯材と、セラミック
ファイバーブラケットからなる外殻と、ガラスクロスま
たは耐火性不織布のいずれかからなる表皮とで構成され
ていることを特徴とする請求項１に記載の免震建造物の
防火壁の構造。 2. A steel sheet mounting member as set forth in claim 2, wherein
And a core material made of rock wool felt and ceramic
Outer shell made of fiber bracket and glass cloth
Or a skin made of any of fire-resistant nonwoven fabrics
The seismic isolation building according to claim 1, wherein
Fire wall structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP09845397A JP3311270B2 (en) | 1997-03-31 | 1997-03-31 | Fireproof structure of base-isolated building |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP09845397A JP3311270B2 (en) | 1997-03-31 | 1997-03-31 | Fireproof structure of base-isolated building |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10280582A JPH10280582A (en) | 1998-10-20 |
| JP3311270B2 true JP3311270B2 (en) | 2002-08-05 |
Family
ID=14220141
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP09845397A Expired - Fee Related JP3311270B2 (en) | 1997-03-31 | 1997-03-31 | Fireproof structure of base-isolated building |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3311270B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5156207B2 (en) * | 2006-08-31 | 2013-03-06 | 大成建設株式会社 | Fireproof coating structure |
| FR3091655B1 (en) * | 2019-01-16 | 2021-01-29 | Gv2 Int Veda France | Fire-resistant sheet structure in particular to form a fire-resistant seal for building openings |
-
1997
- 1997-03-31 JP JP09845397A patent/JP3311270B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH10280582A (en) | 1998-10-20 |
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